Aberdeen is known as a young pupa after weaning. The larval rearing period refers to a period of time from when weaning to weaning after weaning. It usually refers to the period from late June to the end of October. If we want to do a good job of breeding and management during the breeding period, we must first master the characteristics of growth and development of young and young cubs. According to the characteristics of their growth and development, we must seize the law, can effectively grasp the feeding and management, promote its normal growth and development, and cultivate excellent species.貉 and produce high-quality fur products to improve economic efficiency.

A, Aberdeen, Custard growth and development characteristics

At birth, Aberdeen's body is only 8-12 cm long and weighs 100--150 grams. The body surface is covered with black and short fetal hair, and the growth and development is very rapid. It is divided into 45--60-day-old weaning nests. Weight can increase more than ten times, body length can increase about three times. The growth and development of larvae have a certain regularity. The growth of body weight and body length are synchronous. The growth and development rate is fastest before 90-120 days of age, and the growth rate is slower after 120-150 days of age, and the growth is slower. The 150--180-day-old growth is basically over, and the young cubs have reached the weight and body length of the adult quail.

Second, the breeding and management of young cubs

The main tasks of feeding and management in this period are: to ensure the survival rate in terms of quantity, and to keep the number of litters at the nest; to reach the standard body condition and fur quality of the species at the end of the period in order to obtain a length Large, good-quality fur products, but also to develop a good breeding pheasant, lay the foundation for the continued expansion of production.

(a) feed nutrition. The first two months after weaning, that is, when the young larvae are 60--120 days old, their growth and development is the fastest. It is a crucial period to determine the size of the basic larvae, and must provide high-quality, adequate feed nutrition, otherwise Once the lack of nutrition, growth and development are hindered, even if later strengthen the nutrition, it is difficult to make up for this loss. Therefore, the juvenile breeding period should provide feeds with high quality, full price, and high energy content. For example, feeds containing more carbohydrates or higher fat content feeds should be provided. The diets should be dominated by cereals and cakes. , Appropriate to provide fish, meat and their chopped feed. In addition, special attention should be paid to calcium, phosphorus and other mineral feed such as fresh bone, rabbit head or skeleton. Feed some vitamin feeds properly.

The larvae grow vigorously, and the supply of protein in the diet should be kept at 40-50 grams per day. If the protein is insufficient or the nutrient is incomplete, it will seriously affect its growth and development. When the young cubs are fed 2 to 3 times a day and 3 times a day, 30%, 20%, and 50% of the whole day's diet will be eaten by the early, middle, and late dates respectively. This allows the quail to eat freely, how much to feed, and how much to feed. No food is allowed.

(b) Management of milk and calves. Just weaned pups can be maintained in two or more cages, or they can be kept in a pen quarter, until they are skinned. When breeding in cages with pups or puppies, cages should be as far as possible. This will facilitate observation and avoid competition.

(c) Domestication of young cubs. The breeding period of juveniles is a favorable period for acclimation and domestication can be carried out by means of food inducement, frequent approach, or caressing. For young cubs, we must insist on acclimation from a young age, step by step, and generally receive significant domestication effects. Some can be domesticated to the extent of picking up without biting, and some can follow the rearing staff like a pup, to the extent that they are not far from the owner. Good breeding habits, estrus, mating, and litter production are carried out smoothly because they are not afraid of humans, which is beneficial to raising fertility.

(d) Hot summer management. Juvenile breeding period is in hot summer, and management should pay special attention to heatstroke prevention and disease prevention. Water boxes and utensils should be cleaned regularly, regularly disinfected, and the excrement and residual food in the chambers and cages should be removed at any time to prevent excessive spoilage if the time is too long. Once the corrupt feed is eaten by the cockroach, it will Suffering from diseases such as enteritis. The functions of the newly weaned pups' digestive feeds are not yet sound, they are not adaptable to the environment, and they are prone to suffering from enteritis or urinary tract diseases. The clean, dry grass mats should be laid in small rooms. Pay attention to the shade and ventilation of the cage. When it is hot in the middle of the day, it is necessary to catch up with the calf movement and ensure sufficient cool drinking water. Sprinkle water on the ground to prevent heat stroke.

(five) rearing after grouping. After September-October, the cubs have reached the size of the nymphs and should be selected for breeding. After the seeds are selected, they are reared with pelicans. The rearing and management of breeding cubs is the same as that for breeding. The main points for feeding leeks are to ensure the normal life activities and the nutritional needs of growing and ripening. The breeding standards can be slightly lower than that for breeding, and some inexpensive animal feeds with high fat content can be used, which is beneficial to increase the fatness, increase the luster of the plush, and improve the quality of the fur, and can also reduce the cost of feeding. The pimple's small room should be draped with grass to facilitate combing, and hygiene should be done to prevent the follicle from being contaminated and plush tangled.

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